20481064 has 16 divisors (see below), whose sum is σ = 38697120. Its totient is φ = 10161840.

The previous prime is 20481059. The next prime is 20481067. The reversal of 20481064 is 46018402.

It is not an unprimeable number, because it can be changed into a prime (20481067) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8724 + ... + 10819.

It is an arithmetic number, because the mean of its divisors is an integer number (2418570).

Almost surely, 2^20481064 is an apocalyptic number.

It is an amenable number.

20481064 is a deficient number, since it is larger than the sum of its proper divisors (18216056).

20481064 is a wasteful number, since it uses less digits than its factorization.

20481064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19680 (or 19676 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 20481064 is about 4525.6009545695. The cubic root of 20481064 is about 273.6008894446.

Adding to 20481064 its reverse (46018402), we get a palindrome (66499466).

The spelling of 20481064 in words is "twenty million, four hundred eighty-one thousand, sixty-four".